locked framerate

[aNt]

anyone got any tricks on how to lock the frame rate to
a give rate - say 24fps and if u cant keep to that then
start missing frames.

i dont mind jerky frames- i need the scene to be
updating on time. is it a case of having a Thread that
updates the logic- then another that updates Xith
running best it can?

or is there a better way?

[SpuTTer]

I was thinking of adding frame limiting to my game soon, but I hadn't gotten around to it yet. I just implemented the GAGE timer, so I was going to work with that to see if I could set it up. I'll let you know if I get anything working.

Surely someone else must have done this?

[kevglass]

Yep.. with GAGETimer its particularly easy.

1) Record the time before you start rendering
2) Render your frame
3) call SleepUntil(StartTime + FrameTime)

Where frame time is caculated :

FrameTime = 1.0 / FPS;

Might need to multiply up for milliseconds or something. I always wrap it all up so I deal with seconds.

Kev

Games published by our own members! Check 'em out!

[SpuTTer]

Thanks as always Kev. Maybe I'll add this sooner than I had originally planned while we're on the topic..

[SpuTTer]

Basically used Kev's SpaceInvaders example as my bible and went to town. Took maybe 15 minutes and I'm locked at ~33fps right now...

Ant, have a look see at this tutorial by Kev:

http://www.cokeandcode.com/info/tut2d-2.html

[aNt]

runs over to look *click point click*